NB/T 47021  法兰 C-FF 300-1/106 RF0592-200)-0

47021 C-FF300-1106 RF0592-200)-0

47023fm1800-2.50-1047022 RF1000-1

SO450-600 FF=89=�┬ö�

PL50(B)-25 RF´=9 h=1100rf

法兰wn25(b)-40 m s=4S-1.

wn65(b)-63 rf m=42 Hmpampam

WN200(B)-63 FM S=10=3

WN 250-300 RF2850 L=51.651.03150727

HT WN200-150 RF